Chinook Salmon invade South America

(from WorldChanging):
 Salmon-MapChinook salmon were introduced to southern South America about 25 years ago to be farmed, but they have not surprisingly escaped, and have now established themselves in the streams of Chile. This will cause unknown ecological consequences to Chile, but it also shows how resilient salmon can be in establishing a population in a new environment–a lesson that indicates that if the river environments of the western US can be restored, that the salmon population could also recover.

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